Check out my website: http://tonyfisherpuzzles.net for information and puzzle sales
This is my 15mm transformation of a 20mm factory made Micro Rubik's Cube. The reason it is a little rough looking is because it pushes the boundaries of transforming puzzles by hand to the limit.
The smallest ever mass produced Rubik's Cube was 19mm.
Evgeniy Grigoriev made a fully working Rubik's Cube which is 10mm. That was constructed through CAD and Shapeways 3d printing service.
Many people get confused over the different sizes and claim to have a Nano Cube sized keychain cube. This is incorrect since no working keychain cube or dollar store cube has ever been made smaller than 19mm.
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